For anynone that is running the latest version of binwalk (Binwalk v2.3.3) and when trying to extract squshfs filesystems, gets the following error:
WARNING: Extractor.execute failed to run external extractor 'sasquatch -p 1 -le -d 'squashfs-root' '%e'': [Errno 2] No such file or directory: 'sasquatch', 'sasquatch -p 1 -le -d 'squashfs-root' '%e'' might not be installed correctlyit might have to do that the sasquatch project is missing or not working correctly.